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Pathways

Featured Pathways

Displaying 1 to 12 (of 789 pathways)

Featured Pathways

P53, the most extensively studied tumor suppressor, is a regulative factor of many processes necessary for the proper functioning of cells, and it corresponds to a number of processes associated with its life and death. The p53 protein regulates the repair of cellular DNA and induces apoptosis when the damage of the gene is too serious and it is impossible to repair. P53 can be activated by DNA[..]

Angiogenesis and lymphangiogenesis, the growth of new blood vessels from preexisting ones, are important processes during embryonic development, tissue growth, wound healing, and several pathological conditions. Several molecules are important for angiogenesis, most important being vascular endothelial growth factor (VEGF) family members and their corresponding receptors. VEGF belongs to the PDGF[..]

The endothelium functions as a semipermeable barrier,regulating tissue fluid homeostasis and transmigration of leukocytes and providing essential nutrients across the vessel wall.Transport of plasma proteins and solutes across the endothelium involves two different routes: one transcellular,via caveolae-mediated vesicular transport, and the other paracellular, through interendothelial junctions.[..]

The migration of leukocytes or WBCs (White Blood Cells) from the vascular system to sites of pathogenic exposure is a key event in the process of inflammation. The inflammatory reaction enables the organism to defend itself against infectious microbes. The entry of leukocytes into sites of injury or infection requires molecular mechanisms which enable the leukocytes to recognize such sites[..]

In order to initiate a specific immune response to an infectious agent, the immune system must be able to wade through the sea of molecules that are associated with pathogenic invasion and isolate particular protein products that will sharpen the efforts of host defense. Implicit to this model of counteraction is the processing of an immunogenic peptide epitope (Antigen Processing) and its[..]

Hematopoiesis is the process that generates blood cells of all lineages (Ref.1). The process of generation of blood cells begins in the early embryo and continues throughout life. Every day, billions of new blood cells are produced in the body, each one derived from a HSC (Hematopoietic Stem Cell). Because most mature blood stem cells have a limited life span, the ability of HSCs to perpetuate[..]

Hematopoietic Stem Cells (HSCs) have the property of self-renewal and through cell division and differentiation, form populations of progenitor cells which are committed to the main marrow cell lines; Erythroid, Granulocytic and Monocytic, Megakaryocytic and Lymphocytic. The earlier progenitor cells are multipotent but, as division and differentiation proceed, later progenitors are formed that[..]

HSV1 (Herpes Simplex Virus Type-1) is a member of the Herpes group of viruses, the Herpesviridiae, which includes the important human pathogens HSV2, CMV (Cytomegalovirus), Varicella zoster Virus, EBV (Epstein-Barr Virus), HSV6 and 7, and Kaposi's associated Herpes virus, HHV8 (Human Herpesvirus-8). Of these, HSV1 has been the most extensively studied. Human is the only natural host to HSV.[..]

Plants have pores, Stomata, on their leaf surfaces that allow CO2 (Carbon Dioxide) in for photosynthesis and through which water evaporates. The specific cells that border and define these pores are Guard Cells. Guard Cells literally guard the size of the pore by alternately swelling, which opens the pore, or shrinking, which closes the pore. Plants must respond to a variety[..]

A blister (bulla) is a bubble of fluid that forms beneath a thin layer of dead skin. The fluid is a mixture of water and proteins that oozes from injured tissue. Blisters most commonly form in response to a specific injury, such as a burn or irritation, and usually involve only the topmost layers of skin. These blisters heal quickly, usually without leaving a scar. Blisters that develop as[..]

The Proper functioning of a cell requires careful control of the levels of important structural proteins, enzymes, and regulatory proteins. Protein molecules are continuously synthesised and degraded in all living organisms. The concentration of individual cellular proteins is determined by a balance between the rates of synthesis and degradation, which in turn are controlled by a series of[..]

Stem Cells are undifferentiated cells that can give rise to several lineages of differentiated cell types. They are the founder cells for every organ, tissue and cell in the body. Stem cells are characterized by the ability to self-renew and maintain Pluripotency. These features allow Stem Cells to fulfill their multiple functions, namely to provide enough cells during organogenesis, to control[..]

Displaying 1 to 12 (of 789 pathways)
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